Refrigerating apparatus



.5, 1933. E. A. BURRows REFRIGERATING APPARATUS 2 Sheets-Sheet l Original Filed Occ. 13. 1926 Dec. 5, 1933. E A, B'URROWS 1,938,316

REFRIGERATING APPARATUS Original Filed Oct. 13, 1926 2 Sheets-Sheet 2 l .5a condition.

Patented Dec. i5, 1933 UNITED STATI-:s

messie BEFBIGERATING APPARATUS Eastman A. Burrows, Chicago, Ill., assignmto Thomas D. Bu, Chicago, Ill.

, Application October 13, 1926, Serial No. 141,40

Renewedy April 27, 1933 a claims. A(c1. zz- 99) My invention relates to refrigerating apparatus and particularly to devices commonly known as refrigerators for use in houses, butchershops, delicatessens and various`other places where it is 5 desired to keep articles in a cool place.

One of the objects of the invention is to provide a simple, practical and advantageous refrigerating apparatus of the class speciiied.

Another object of the invention is to secure refrigeration by articially produced and maintained ice or ice mats or structures.

Another object of the invention is to arrange for the production of the refrigerating ice or ice structure within the apparatus itself.

Another object of the invention is to provide for the use of natural or loose cakes or pieces of ice temporarily in case the artiilcially produced ice or ice structure becomes ineiective by melting or otherwise. Y 2P Other objects of the invention will be pointed out and appear hereinafter.

In the accompanying drawings: Fig. 1 is a cross section of a refrigerator espe-` cially adapted for butchers or delicatessens and` embodying the invention. y Y

Fig. 2 is a cross section taken at right angles to the cross section of Fig. 1.

Fig. 3 is a horizontal section of the device and Figs. 4 and 5 are views of details of construction.

Referring to the drawings I show a refrigerating apparatus in the form of a rectangular box 1, although it is understood that the form or shape of the device may be greatly varied. This box 1 is understood to be of insulating or nonconductlng construction in accordance with usual refrigerating box structures. A door 2 is shown for inserting articles within the refrigerator and for withdrawing them therefrom.

Within the box 1 is shown an arrangement by 49 which an ice block or ice mat or other ice like structure is arranged and maintained in afroaen condition. The arrangement shown which of conne. canfbe varied comprises one or more metallic'tank like structures 3 3 containingsand or other'preferably granular material of relativa ly high heat conductivity. Water is used, in

connectionwiththesandaoa'stofllltheinter-` stices thereof and circulatory-pipes 4 4 are imbedded in the sandso as to permit the circulation ofacoolingmediuminsaidpipes. YBythiaarrangement the water 'freeaes and with the sand formsgfanice matjor lioelike structure and ,the continual circulation of the cooling medium maintains this ice mat or structure in a froae'n These pans or tanks 33may be variously lo'- cated in the ice box or refrigerator but are preferably mounted well up toward the top of the same so that they may serve as cool or cold surfaces for the support of articles in the refrigera 60 tor andA may also serve to cool the bottom portion of the refrigerator and thus make it suitable for keeping various articles inserted through the door 2 in a cool condition.

As a preferred arrangement the pans 3 3 are 65 made with their outer ends higher as shown in Fig. 1 so as to form outside lips oriianges for holding the frozen material and also the articles thereon in better position. Also drip pans 5-5 are preferably arranged below the pans 3-3. 'Ihe 70 circulatory pipes 4 4 are preferably connected with suitable apparatus for circulating a cooling medium therein, such. for example, as a refrigeratingl machine. 'Io such end inlet and outlet pipes 6 and 7 are provided for attachment to 75 such a refrigerating machine and a pipe connection 8 is shown between the pipes 4 4 of the two ice mats, whereby the cooling medium may be circulated through both sets of pipes.- Cross beams 9-9 are shown for supporting the tanks 80 3--3 and drip pans 5-5 and other cross beams 10-10 are shown for supporting slats 11-11 which will serve as a iioor for holding or supporting articles in case it is desired to place the same thereon.

In case the cooling mechanism gets out of order or for other reason the ice mats or structures melt or partially melt so that they cease to be serviceable for the purpose intended, provision is made for permitting the use of ice blocks or pieces as in the ordinary refrigerator or icebox. To such end there is Vshown a side window or door 12 preferably near the upper part of the box so that pieces of ice may be inserted into the box and placed in position on the floor formed by slats 11 'or disposed of otherwise as desired. This permits the box and its contents to be temporarily cooled pending a repair of the cooling apparatus or otherwise arranging for the normal resumption of operationjon the part of the ice mats or structures. This prevents the spoiling of food or other articles inside the ice box during such abnormal conditions.

' In Fig.' 4 there is shown an outlet connection for preventing an overiiow of the cooling fluid in the circulatory pipes 4. In this arrangement -the outletv pipe l is terminated at 'la about the middle of the b ore of the pipe 4 so `that cooling. iluid will always tend to iiow down pipe l when the pipes 4 are about haliiull. .tio

This apparatus is related to that shown and covered in my United States Patent No. 1,514,128 issued November 4th, 1924.

What I claim is:

1. In a device of the class specified, the combination of a cooling support provided with refrigerating means in combination with a support comprising a spaced rack-like structure for a cooling medium above said cooling support.

2. A portable refrigerator of the class described comprising a rectangular box, a door in a wall thereof for inserting articles therein, an ice mat arranged above said door, said ice mat comprising a plurality of metallic tank-like structures having a sand mixture therein, a piping arranged within said tanks within which a cooling medium may be circulated, a plurality of drip pans below said tank-like structures, said tanklike structures and said pans being spaced from the walls and from each other and a shelf thereabove.

3. A portable refrigerator of the class described comprising a rectangular box, a door in a wall thereof for inserting articles therein, an ice mat arranged above said door, said ice mat comprising a plurality ot metallic tank-like structures having a sand mixture therein, a piping arranged within said tanks within which a cooling medium may be circulated, a plurality of drip pans below said tank-like structures, said tank-like structures and said pans being spaced from the walls and from each other and a shelf thereabove upon which a cooling medium may be placed.

EASTMAN A. BURROWS. 

